I really can't understand this mindset. Unless there's a really, really good reason putting kids in cages like they're stray dogs that've been rounded up off the street is a) wrong and b) very obviously dehumanizing them in preparation for what's to come. It doesn't matter who is doing it.

I don't know what that good reason would be. About all I could think of is if there was some natural disaster and it's literally the only building standing and you've got a bunch of kids that got cut off from their parents that you need to keep warm and dry. And even then it's pretty suspicious that you've got buildings with human cages in them in the first place.